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levacccp [35]
3 years ago
11

Solve the system r + s = -12

Mathematics
2 answers:
marshall27 [118]3 years ago
6 0
<span> r + s = -12 so r = -s - 12
</span><span>4r - 6s = 12

substitute </span>r = -s - 12 into 4r - 6s = 12

4r - 6s = 12
4(-s - 12) - 6s = 12
<span>-4s - 48 -6s = 12
-10s = 60
     s = -6

r = -(-6) - 12
r = 6 - 12
r = -6

answer
</span><span>B -6,-6</span><span>

</span>
umka2103 [35]3 years ago
5 0

Answer:

B. (-6,-6)

Step-by-step explanation:

 r + s = -12 so r = -s - 12

4r - 6s = 12

substitute r = -s - 12 into 4r - 6s = 12

4r - 6s = 12

4(-s - 12) - 6s = 12

-4s - 48 -6s = 12

-10s = 60

    s = -6

r = -(-6) - 12

r = 6 - 12

r = -6

So therefore the answer is (-6,-6).

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